Original Posted By: helspersew(at)aol.com
Thanks for the replies I have got it sorted turns out that it is a type 1 ringCarsonRead this topic online here:http://forums.matronics.com/viewtopic.p ... ___Subject: Pietenpol-List: BIG problems- Model A wth dual magsDate: Wed, 29 Sep 2010 18:35:10 -0400
Pietenpol-List: BIG problems- Model A wth dual mags
Pietenpol-List: Re: BIG problems- Model A wth dual mags
Original Posted By:
Dan,Possibly the cam gear could have been defective, but also consider that the magnetogear might not have been properly meshing with the cam gear. If there wastoo much or too little clearance between the teeth of the gears, that couldacount for the accelerated wear. Is there an iron camshaft gear available? Isthere a way to check/ adjust the lash between the gears when everything is fullyassembled? Are both the magneto drive gear and the cam gear of the samepitch? Is any form of lubrication provided to the interface of the cam and magnetogears?Your presumption that the cam was still turning is correct, for if the cam is notturning, your engine will NOT run. Thankfully you had dual ignition and thatthe remaining mag got you back home. God was obviously looking out for you!--------Billy McCaskillUrbana, ILtail section almost done, starting on ribs soonRead this topic online here:http://forums.matronics.com/viewtopic.p ... ______Date: Wed, 29 Sep 2010 19:19:09 -0400
Dan,Possibly the cam gear could have been defective, but also consider that the magnetogear might not have been properly meshing with the cam gear. If there wastoo much or too little clearance between the teeth of the gears, that couldacount for the accelerated wear. Is there an iron camshaft gear available? Isthere a way to check/ adjust the lash between the gears when everything is fullyassembled? Are both the magneto drive gear and the cam gear of the samepitch? Is any form of lubrication provided to the interface of the cam and magnetogears?Your presumption that the cam was still turning is correct, for if the cam is notturning, your engine will NOT run. Thankfully you had dual ignition and thatthe remaining mag got you back home. God was obviously looking out for you!--------Billy McCaskillUrbana, ILtail section almost done, starting on ribs soonRead this topic online here:http://forums.matronics.com/viewtopic.p ... ______Date: Wed, 29 Sep 2010 19:19:09 -0400
Pietenpol-List: Re: BIG problems- Model A wth dual mags
Original Posted By: "Pieti Lowell"
899PM wrote:> Jon,> > I am interested in the entire lot of your "HUGE" turnbuckles for another projectif they might be for sale? E-mail me at "aeromarine39(at)yahoo.com"> > Mike CThanks for the offer, Mike. I won't be getting rid of them until I have thingspretty well assembled which may be months.--------Jon Coxwell GN-1 BuilderRecycle and preserve the planetRead this topic online here:http://forums.matronics.com/viewtopic.p ... ___Subject: Pietenpol-List: Re: BIG problems- Model A wth dual mags
899PM wrote:> Jon,> > I am interested in the entire lot of your "HUGE" turnbuckles for another projectif they might be for sale? E-mail me at "aeromarine39(at)yahoo.com"> > Mike CThanks for the offer, Mike. I won't be getting rid of them until I have thingspretty well assembled which may be months.--------Jon Coxwell GN-1 BuilderRecycle and preserve the planetRead this topic online here:http://forums.matronics.com/viewtopic.p ... ___Subject: Pietenpol-List: Re: BIG problems- Model A wth dual mags
Pietenpol-List: Re: BIG problems- Model A wth dual mags
Original Posted By: Dan Yocum
Re: Pietenpol-List: Re: BIG problems- Model A wth dual mags
Original Posted By: helspersew(at)aol.com
Re: Pietenpol-List: BIG problems- Model A wth dual mags
Original Posted By: helspersew(at)aol.com
Bill,The material for the eye ends is 3/16" cold rolled. I also purchased some 3/16"stainless and some very expensive silver brazing wire and will try one out ofstainless. The under cutting was done on a lathe before the eye was bent. I built a little jig out of a piece of angle iron and some 20d nails and heatedthe end with a torch to make the bend. After brazing it shut I drilled theeye out to clean it up with a 3/16" bit. The barrel was started with 3/8" hex stock. I turned the ends down to just pastpoint where the flats were gone. The turn buckle shown is a little bit longso I will build a shorter one with a 3" barrel and everything else reduced inlength proportionally.After I do another one I will try to get my work sequence down so I can be efficientin my production. I will also document my sizes and tolerances. Emailme and let me know what tools you might be using and I might have some suggestions.I know not everyone has a lathe to work with but I would not be withoutmine.Jon--------Jon Coxwell GN-1 BuilderRecycle and preserve the planetRead this topic online here:http://forums.matronics.com/viewtopic.p ... ___Subject: Re: Pietenpol-List: BIG problems- Model A wth dual magsDate: Thu, 30 Sep 2010 13:55:23 -0400
Bill,The material for the eye ends is 3/16" cold rolled. I also purchased some 3/16"stainless and some very expensive silver brazing wire and will try one out ofstainless. The under cutting was done on a lathe before the eye was bent. I built a little jig out of a piece of angle iron and some 20d nails and heatedthe end with a torch to make the bend. After brazing it shut I drilled theeye out to clean it up with a 3/16" bit. The barrel was started with 3/8" hex stock. I turned the ends down to just pastpoint where the flats were gone. The turn buckle shown is a little bit longso I will build a shorter one with a 3" barrel and everything else reduced inlength proportionally.After I do another one I will try to get my work sequence down so I can be efficientin my production. I will also document my sizes and tolerances. Emailme and let me know what tools you might be using and I might have some suggestions.I know not everyone has a lathe to work with but I would not be withoutmine.Jon--------Jon Coxwell GN-1 BuilderRecycle and preserve the planetRead this topic online here:http://forums.matronics.com/viewtopic.p ... ___Subject: Re: Pietenpol-List: BIG problems- Model A wth dual magsDate: Thu, 30 Sep 2010 13:55:23 -0400
Pietenpol-List: Re: BIG problems- Model A wth dual mags
Original Posted By: "899PM"
No washout - stalls fine.--------Kevin PurteeNX899KPAustin/Georgetown, TXRead this topic online here:http://forums.matronics.com/viewtopic.p ... ___Subject: Pietenpol-List: Re: BIG problems- Model A wth dual mags
No washout - stalls fine.--------Kevin PurteeNX899KPAustin/Georgetown, TXRead this topic online here:http://forums.matronics.com/viewtopic.p ... ___Subject: Pietenpol-List: Re: BIG problems- Model A wth dual mags
Original Posted By: Dan Yocum
Dan,I believe the phenolic gear to be the best option solely based on it's abilityto absorb minute mismatch in mesh. It is critical that the mesh be within tolerance.AER/Skokie knows their stuff in this department. They inserted my engine...bothmains and rods. I did everything else. I have nearly 5 hours on my engineand will tear it down at 10 to check everything out. I am a firm believerthat simple is better and only have the single ignition Bosch MJC-4C mag on myengine. I checked with several old time mag shops and asked what mag they thoughtto be the most dependable. If I remember correctly 3 out of 5 said the BoschMJC were bulletproof. Something to remember is that AER only knows what Pietowners tell them. I had to explain to him that the prop is pulling againstthe front thrust bearing. As set-up for a car(by AER) they put the thrust bearingin the front of the rear main....to take clutch/declutch loads. Think aboutthat for a minute. I had him put thrust bearing on both ends of the rear main.No one had ever explained that to him before.I would like to see your engine when you tear it down. We can all learn from whatyou find. Mike C--------PAPA MIKERead this topic online here:http://forums.matronics.com/viewtopic.p ... ______Date: Fri, 01 Oct 2010 09:57:07 -0500
Dan,I believe the phenolic gear to be the best option solely based on it's abilityto absorb minute mismatch in mesh. It is critical that the mesh be within tolerance.AER/Skokie knows their stuff in this department. They inserted my engine...bothmains and rods. I did everything else. I have nearly 5 hours on my engineand will tear it down at 10 to check everything out. I am a firm believerthat simple is better and only have the single ignition Bosch MJC-4C mag on myengine. I checked with several old time mag shops and asked what mag they thoughtto be the most dependable. If I remember correctly 3 out of 5 said the BoschMJC were bulletproof. Something to remember is that AER only knows what Pietowners tell them. I had to explain to him that the prop is pulling againstthe front thrust bearing. As set-up for a car(by AER) they put the thrust bearingin the front of the rear main....to take clutch/declutch loads. Think aboutthat for a minute. I had him put thrust bearing on both ends of the rear main.No one had ever explained that to him before.I would like to see your engine when you tear it down. We can all learn from whatyou find. Mike C--------PAPA MIKERead this topic online here:http://forums.matronics.com/viewtopic.p ... ______Date: Fri, 01 Oct 2010 09:57:07 -0500